Hi.
I've been flicking through the technical section and just read a comment that the Borg Warner H150 diff (from 120Y/B210) are actually tougher than H165 diffs (1200 ute, etc). I was surprised by this comment and just wanted to confirm peoples opinions on this diff.

If it performs as good as H165's then will later BW LSD packs fit in them??

its not a h150, h150s are definatly weaker than h165s
its just a 120y BW diff

but it is likely that they are of similar strength to the h165

i havnt actually seen a 120y BW diff, but i assume they are about the same size as a corolla BW
which is the same size as corrona and 200b BW diffs

BW78 LSDs wont fit in them as there is a fair difference in size
but if you can get an LSD for corollas corronas or 200b BW diffs then i assume it would work

Ok. Sorry, I was confused. I guess a H150 is a Hitachi diff and not a borg warner.

Let me rephrase the question then...

Is the Borg Warner diff commonly found in Aussie 120Y's a good diff in comparison to the H165 1200 Ute diff ??

I've worn out the H165 in the race car and I know jack-all about diffs.

My brother bought a live axle diff from a toyota corona just last week complete with LSD for a grand total of $40. I needs cutting down though.

Thats what's spurred on all my interest.

well you'd have to get onto someone that has a 120y bw so you can look at it

but just a guess, if corollas being only a 1200 got that size diff, i dont see why the 120ys would be smaller
1200 BW being the useless freak small diff in this guess,what were they thinking

The H150 differential, made in Japan by Hitachi, & the Borg Warner rear axle assembly, made in Australia by, well, ummm, Borg Warner, are two totally different items.

Both were used in 120Y's in Australia, but the BW unit was used only in locally assembled Sedans from July 1976 onwards.
Coupes, Wagons, & Vans were still imported after this date & still used the H150 diff along with any Sedans that might have been imported after this date too.

There have been many who make claims of superior strength of thr BW item, but there has been no actual evidence of this. If someone can come up with some factory torque values we could compare against the Jap diffs, the torque values of which are pretty well known.

This seems to be what happens without actual facts & figures. Somebody makes a claim about something & it gets both repeated & enhanced with each re-telling.

The BW rear end seems to have a strong following & seems strong enough to handle some abuse, but, in my view, isn't up to the same level as the H165 simply because the H165 is bigger & was designed for a much greater load.
Please, someone, come up with some technical data.

The downside to the BW rear end is the lack of readily available ratios & the difficulty of changing ratios in the home workshop, unless the whole rear axle assembly is changed.

We got no B/W's in our datsuns over here in NZ.
I wouldn't have one even if if we did. I have spent more hours than I care to remember swapping blown borg warner crap out of valiants and falcons.
I know it's not qiute the same but IMO, it's complete SH1T. If it hadn't been for your local content laws, Oceania would be awash with 8-3/4 rear ends, and new process four speeds.

i agree with you dodgeman, and it is hard to give my veiw without having seen a 120y BW

but if they are the same size as corolla ones, then both the h165 and that size BW were used behind L20b's, making me think that putting them in corollas and possibaly 120ys was just overkill

all theories subject to diff size

So this type of diff was behind an L20B?? They weren't used on Bluebirds to my knowledge. What car used them ???

australian 200b's